- Mobil Pegasus 605 Ultra 40 is the latest generation of gas engine oil primarily intended for the lubrication of modern medium and high-speed four-cycle engines operating on landfill gas that contains contaminants such as hydrogen sulphide, halides or siloxane.
- Its formulation has been carefully balanced to provide extended oil drain intervals, control the formation of carbon and varnish deposits, with very good anti-wear and anti-scuff performance.
Specification and Approvals
Property
|
|
Grade
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SAE 40
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Ash, Sulfated, mass%, ASTM D874
|
0.6
|
Density @ 15.6 C, kg/l, ASTM D1298
|
0.850
|
Flash Point, Cleveland Open Cup, °C, ASTM D92
|
268
|
Kinematic Viscosity @ 100 C, mm2/s, ASTM D445
|
15
|
Kinematic Viscosity @ 40 C, mm2/s, ASTM D445
|
138
|
Pour Point, °C, ASTM D97
|
-21
|
Viscosity Index, ASTM D2270
|
110
|
Base Number - Xylene/Acetic Acid, mg KOH/g, ASTM D2896 (*)
|
5.7
|
(*) use of other ASTM approved solvents may yield different results
Applications
Engines operating on fuel containing corrosive materials such as THCl (Total Organic Halides as Chloride) such as landfill or biomass gas
Gas engines operating on fuel that contains moderate levels of hydrogen sulfide (H2S)
Spark ignited four-cycle gas engines with very low lube oil consumption
Medium and high speed four-cycle engines equipped with catalytic converters requiring a low ash gas engine oil
Reciprocating compressors operating on natural gas that contains sulphur or chlorine compounds